午夜福利总站-午夜国产-午夜国产爆乳-午夜国产传媒-午夜国产大片-午夜国产福利片-午夜国产福利在线-午夜国产精品福利-午夜国产精品视频-午夜国产理伦

conhecimento

'Its strength is its simplicity' The benefits of cleaning with vinegar.txt

erpmje

12 Oct 2025(atualizado 12/10/2025 às 05h41)

'Its strength is its simplicity': The benefits of cleaning with vinegarSkip to contentBritish Broadc

Temas

Compartilhe

BBCcom_Content_Index_for_February_4_2019.txt'Its strength is its simplicity' The benefits of cleaning with vinegar.txt

'Its strength is its simplicity' The benefits of cleaning with vinegar.txt

'Its strength is ganhar dinheiro no bet365its simplicity': The benefits of cleaning with vinegarSkip to contentBritish Broadcasting CorporationRegisterSign InHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveHomeNewsIsrael-Gaza WarWar in UkraineUS & CanadaUKUK PoliticsEnglandN. IrelandN. Ireland PoliticsScotlandScotland PoliticsWalesWales PoliticsAfricaAsiaChinaIndiaAustraliaEuropeLatin AmericaMiddle EastIn PicturesBBC InDepthBBC VerifySportBusinessExecutive LoungeTechnology of BusinessFuture of BusinessInnovationTechnologyScience & HealthArtificial IntelligenceAI v the MindCultureFilm & TVMusicArt & DesignStyleBooksEntertainment NewsArtsArts in MotionTravelDestinationsAfricaAntarcticaAsiaAustralia and PacificCaribbean & BermudaCentral AmericaEuropeMiddle EastNorth AmericaSouth AmericaWorld’s TableCulture & ExperiencesAdventuresThe SpeciaListTo the Ends of The Earth EarthNatural WondersWeather & ScienceClimate SolutionsSustainable BusinessGreen LivingAudioPodcast CategoriesRadioAudio FAQsVideoLiveLive NewsLive SportHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherNewsletters'Its strength is its simplicity': The benefits of cleaning with vinegar24 April 2025ShareSaveKatarina ZimmerShareSaveGetty Images(Credit: Getty Images)Katarina Zimmer put vinegar to the test as a cleaning product and discovered a wide range of benefits, for people and the planet.A few months ago in my new Berlin apartment, my toilet and I were at war. No amount of scrubbing or toilet cleaner would evict the limescale coating inside. Frustrated, I turned to Google and stumbled across a page recommending vinegar – something that the previous inhabitant had left behind in abundance. After dropping two tablespoons full of "Essigessenz" – essentially concentrated vinegar – into the toilet and waiting for half an hour, I scrubbed and the limescale came off in a moment. Since then, I've enthusiastically used vinegar to rid my world of limescale. I've found it even more effective than my regular kitchen spray cleaner for getting my sink sparkling. That includes the faucet, which I wrapped in a vinegar-soaked kitchen tissue – whereas my regular cleaning spray dribbled off. And rather than having to buy special tablets to clean my limescale-smothered glass kettle, I simply poured two tablespoons of concentrated vinegar inside and boiled it. As the limescale crackled off, it made a satisfying sizzling sound.I wondered if vinegar had other advantages. Did it also kill off bacteria and other germs? And, importantly, was this simple, natural product better for the environment and for my health than regular cleaning products? The internet is full of sustainability influencers and green cleaning blogs that advertise vinegar as a jack-of-all-trades and a safer and "greener" alternative to "toxic" cleaning products. These claims make sense on the surface; vinegar is after all just fermented alcohol and has long been used as a food preservative, in salad dressings, as well as a household cleaner – but I wanted evidence. After interviewing three experts, I learned that while some of these claims are true, the benefits of vinegar depend a lot on how it's used and the kind of grime you're trying to get rid of.Getty ImagesLimescale dissolves more easily in acidic fluids like vinegar (Credit: Getty Images)Reassuringly, Eric Beckman, a chemical engineer and emeritus professor at the University of Pittsburgh in Pennsylvania, told me that the best cleaning use for acetic acid – the main component of vinegar – is exactly what I had been using it for: as a descaler. Limescale – and rust, for that matter – consists of certain ions that dissolve more easily in acidic fluids like vinegar, he says. Beckman uses vinegar himself to get limescale off mirrors, while the microbiologist Dirk Bockmühl of Germany's Rhine-Waal University of Applied Sciences prefers using lemon juice, which contains citric acid, which he says is a more effective descaler and smells better. (Read more about why vinegar is such an effective cleaner.)That said, vinegar doesn't work on everything. Beckman says that soap does a better job at removing oily films on dishes, while baking soda is effective against processed oils that have stuck onto surfaces while cooking. (Read more about whether baking soda is environmentally friendly).However, Beckman expresses exasperation about a popular remedy of mixing vinegar together with baking soda. The mixture is chemically quite useless, he says, as the acid of vinegar and the base of baking soda effectively cancel each other out. "I use both, but not together," says Beckman. "Together, they give you nothing."   And while vinegar is often touted as a powerful antimicrobial, Bockmühl says, the truth is more nuanced. In a 2020 study, Bockmühl and his colleagues put vinegar to the test against a selection of disease-causing bacteria, viruses and fungi. While many internet recommendations suggest adding a dash of vinegar into a bucket of water for cleaning, Bockmühl found that its anti-microbial effects only kick in at an acetic acid concentration of 5% – its concentration in pure vinegar. And it was only fully effective at distilled concentrations of 10%  – to which the researchers added a dash of citric acid – in killing off five common bacteria, including Escherichia coli and Staphylococcus aureus, as well as a mould, a yeast and a weakened strain of the vaccinia virus. Other studies have found that similar concentrations also work against Sars-CoV-2, the virus that causes Covid-19.  But even these concentrations didn't work against the MRSA bacterium, an especially stubborn strain of Staphylococcus aureus that's resistant to certain antibiotics, while countless bacteria remain untested. Many bacteria – including the ones that ferment alcohol into vinegar – thrive in acids, Beckman adds: "Then they'll be like, 'ooh, yay, vinegar.'" Some moulds, too, are resistant to acetic acid while some viruses – like norovirus – might be, too, Bockmühl suspects. Beckman says that soaps are more effective against bacteria, while standard disinfectants work better against viruses and moulds. Harsh treatments like bleach will definitely kill everything, Beckman says – although bleach can be unsafe if used incorrectly.Getty ImagesVinegar is less effective against processed oils that have stuck onto surfaces during cooking (Credit: Getty Images)Bockmühl stresses that, even for the germs that vinegar does kill, a relatively high concentration is needed. The concentration won't be adequate "if you just put a teaspoon of vinegar into your cleaning solution", Bockmühl says. However, the higher the dose of acetic acid, the more irritating it can be on the skin, he adds. It is harmful if it gets into your eyes. Surfaces can suffer, too: vinegar corrodes natural stone and metals like copper, bronze and brass, according to the Italian chemist Dario Bressanini's book The Science of Cleaning. And in dishwashers or washing machines, it can harm the rubber gaskets used to seal them, while it could also damage coffee machines and strip away the coating on tiles and grout, Bressanini writes. But Bockmühl assures me that it's fine to use vinegar on glass and ceramic surfaces – like my toilet – and stainless steel sinks.The trouble that Bockmühl sees with using homemade cleaning products is that they don't come with instructions or safety recommendations. "They might be safe if you know what you're doing," he says, "but there are a lot of really stupid and absurd recommendations on the internet".More like this:? Are you cleaning your water bottle enough?? Why you might want to change your bedclothes more often? Seven proven ways to help the planet in 2025 To learn more about how the health risks of vinegar compare with those of conventional cleaners, I called up Nicola Carslaw, professor of indoor air chemistry at the University of York in the UK. Her concern is how cleaners disrupt the air in our homes and buildings. It's known that professional domestic cleaners tend to have higher rates of asthma than other occupational groups, although it's proven difficult to pin that on any single product or ingredient.In a recent study, Carslaw and her colleagues tested 23 different cleaning products including dishwasher fluid, washing up liquid and spray products, and found that many of them released volatile chemical compounds (VOCs). Some of these compounds, like terpenes, are often added to give pleasant aromas, such as lavender or pine oil, but they're highly reactive in the atmosphere. Terpenes for instance, easily react with ozone in the air, creating miniscule particles. In general, inhaling particles of this size has been linked to lung and heart disease."Your nose is a really good filter for the big particles, but the smaller ones can get all the way into your lungs [and] into the bloodstream," Carslaw says. Interestingly, in her study she found that cleaning products marketed as "natural" or "green" didn't seem any healthier in this regard. "The natural/green ones had as many, if not more VOCs as the standard cleaners, and in many cases they were more reactive," she says.Vinegar passes muster on any sustainability scale because it's simple and it's degradable – Eric BeckmanBut vinegar, by contrast, only consists of water and acetic acid (and a few other substances that make the difference between red and wine vinegar, for instance). As such, "it's just not going to be chemically reactive in the same way", Carslaw says. Another advantage of vinegar is that it's usually applied on a cloth to wipe surfaces rather than used as a spray, Carslaw adds. Research shows that cleaning products applied in spray form have more harmful effects on the respiratory system than liquids and wipes. (Read more about the health risks associated with cleaning products in Jessica Bradley's story). "When you spray something, you're turning the chemical into a form that's much easier to breathe [in] than if you have the liquid," Carslaw says. That said, she always advises gloves when there's risk of skin contact, good ventilation and avoiding excessive cleaning, whatever product is used. (Read more about whether we're cleaning too much for our own good).Getty ImagesVinegar quickly breaks down and therefore its environmental impact is low (Credit: Getty Images)This all left me with one remaining question: is using vinegar more environmentally friendly than conventional cleaners? That's a hard question to answer, says Beckman. Ideally, there would be life cycle analyses for cleaning products which track impacts from cradle to grave, tracing each ingredient back to its source, how it's produced, transported, packaged and eventually disposed of. But very few companies do that thoroughly, even if they do brand their products as "green", Beckman says. "But I will say this about vinegar. [Its] strength is its simplicity," Beckman says. Conventional cleaners can consist of more than a dozen different ingredients, many of them industrially manufactured in energy-consuming processes, he says. Acetic acid is born through the natural, yeast-driven fermentation of alcohol, which itself comes from the natural fermentation of sugar. The biggest environmental impact of vinegar-making is where the sugar came from – whether it's grapes, apples, grains, potatoes, or rice – which are largely renewable resources. Bockmühl cautions that this only applies to naturally fermented vinegars, the ones typically sold as food products; there are also synthetic vinegars which are derived from fossil fuels, meaning they come with all the environmentally harmful impacts of oil and gas extraction.  Even at the very end of its life, vinegar has little impact. While many ingredients in soaps are tough molecules and don't easily biodegrade, sometimes continuing to kill organisms once they're in the environment, vinegar quickly breaks down, Beckman says. "Vinegar passes muster on any sustainability scale because it's simple and it's degradable," he says. After discovering all of this, I felt even better about using vinegar. I probably won't rely on it for ridding my surfaces of germs, but I'll keep using it to remove limescale and look forward to trying it out on the next rusty item I find. I'm happy to put up with the smell, knowing that I'm using a sustainable product that's likely better for my health. --For essential climate news and hopeful developments to your inbox, sign up to the Future Earth newsletter, while The Essential List delivers a handpicked selection of features and insights twice a week.For more science, technology, environment and health stories from the BBC, follow us on Facebook, X and Instagram.EarthSustainability on a ShoestringHygieneHealthSustainabilityEnvironmentClimateScienceFeaturesWatchExplaining how a touchscreen works with a sausageBritish mathematician Hannah Fry digs into the science of touchscreens.4 Aug 2025ScienceSeven images that transformed our world viewWatch how the maps and images of our planet from above have changed over the last two millennia.30 Apr 2025EarthTen striking images of an Earth scarred by humansFrom a shipwrecking yard in Bangladesh to a river of iron dioxide in Canada, a deep dive in Ed Burtynsky's work.16 Apr 2025EarthWhat's inside a black hole?Black holes are one of the mysteries of the universe where all the laws of nature as we know them stop working.9 Apr 2025ScienceUsing bubbles to remove forever chemicals from our waterBBC Click visits a UK research team working on a solution to remove toxic chemicals known as PFAS from water.27 Mar 2025ScienceHow sex with Neanderthals changed us foreverWe find out what we gained when Homo sapiens mated with Homo neanderthalensis many thousands of years ago.18 Mar 2025ScienceTheory of Evolution: How did Charles Darwin come up with it?The British naturalist embarked on an extraordinary journey, did hundreds of experiments, and wrote for 20 years.12 Feb 2025ScienceRaja the elephant asking for a road tollIn Sri Lanka, a charming elephant cheekily halts traffic for treats. 29 Jan 2025EarthInside the hidden world of rhino romanceWatch two rhinoceroses involved in a game of 'kiss and chase'.24 Jan 2025EarthThe power of hugs for reducing inflammation in the bodyDr. Lisa Dahlgren discusses the effect human touch has on our health and wellbeing.22 Jan 2025HealthA mother tiger on a fierce hunt to feed her cubsWhile her three offspring take a leisurely bath, this Bengal tiger mother must find food for the entire family.16 Jan 2025EarthHow foxes outsmart world's heaviest raptor in quest for foodWatch red foxes challenge the Steller's sea eagle, the world's heaviest raptor, as they search for food in Japan.8 Jan 2025EarthHomo juluensis: Possible 'new ancient human' identifiedResearchers may have identified a new human species that lived around 300,000 years ago in Asia.6 Jan 2025ScienceMum saves baby seal with a clever trickWatch as David Attenborough reveals the unique behaviour of a mother seal to protect her pup in icy waters.31 Dec 2024EarthHow Arctic communities protect themselves from avalanchesBBC Click finds out how local communities in Svalbard use technology to combat avalanches and heavy snowfall.31 Dec 2024ScienceMountain goats: A death-defying battle to mateWatch the world's largest species of goat fight for the right to mate, teetering on the edge of perilous drops.17 Dec 2024EarthThe near miraculous escape of a cave swiftThe Tam Nam Lod Cave is home to over a quarter of a million swifts. But there are hidden dangers.12 Dec 2024EarthMeet the mudskipper: The remarkable fish that lives on landThe mudskipper is a fish that can leap with a flick of its tail. Watch a particularly agile specimen in action.3 Dec 2024EarthWatch the dramatic escape of tiny fish from deadly sharksThe Moorish idol, a dramatic little fish with dazzling stripes, adopts a clever strategy to save its life.27 Nov 2024EarthEarth tides: Why our planet's crust has tides tooHow do they differ from the ocean? A geophysicist breaks it down for us.28 Sep 2024Weather & scienceMore from the BBC3 hrs agoFarmer, 37, dies after missing out on new treatment Robin Elcock was unable to access new treatment for brain tumours as he did not have the necessary tissue.3 hrs ago4 hrs agoDementia suits show how tricky daily tasks can beThe simulation suits are helping health staff understand the frustration patients face every day.4 hrs ago4 hrs agoBlood cancer treatments come on 'leaps and bounds'A Wiltshire woman, who is now in remission, says new treatments are also much gentler on the body. 4 hrs ago8 hrs agoPostcode lottery for new cancer treatments, doctors warnExperts say bureaucracy is "stifling innovation" and that applying for funding to pay for new treatments can be "cumbersome".8 hrs ago8 hrs agoDr Xand: Stress is normal. Here's how to manage it betterStress, in small doses, can be good for us. Here are five simple, science-backed ways to manage it better. 8 hrs agoBritish Broadcasting CorporationHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherBBC ShopBritBoxBBC in other languagesFollow BBC on:Terms of UseAbout the BBCPrivacy PolicyCookiesAccessibility HelpContact the BBCAdvertise with usDo not share or sell my infoBBC.com Help & FAQsContent IndexCopyright 2025 BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking. 

NEWSLETTER GRATUITA

Nexo | Hoje

Zarb_The_Bedouin_answer_to_barbecue.txt

BBCcom_Content_Index_for_February_24_2023.txt lazer e os conhecimento foco.

GRáFICOS

nos eixos

'No one had the slightest idea what the book was about' Why The Great Gatsby is the world's most misunderstood novel.txt

BBCcom_Content_Index_for_February_23_2019.txt entretenimento e os foco explorar.

Navegue por temas

BBCcom_Content_Index_for_February_29_2024.txt BBCcom_Content_Index_for_February_23_2025.txt BBCcom_Content_Index_for_February_7_2019.txt BBCcom_Content_Index_for_February_3_2018.txt BBCcom_Content_Index_for_February_27_2024.txt BBCcom_Content_Index_for_February_6_2025.txt BBCcom_Content_Index_for_February_25_2022.txt BBCcom_Content_Index_for_February_27_2024.txt BBCcom_Content_Index_for_February_4_2022.txt BBCcom_Content_Index_for_February_24_2022.txt
精品人妻无码一区二区三区4 | 最近最新中文字幕完整版免费高清 | 成人网站国产在线视频内射视频 | 无毒成人网站网址 | 色情A片成人网站免费看视频 | 国色天香精品卡一卡二卡三二百 | 四个人弄我一个要坏掉的 | 中文字幕在线看片成人 | 日本人强伦姧人妻A片 | 国产精品边做奶水狂喷小说 | 色在线看 | 簧片在线免费观看 | 高考陪读妇乱子伦小说长篇 | 国产日产欧产美韩系列影片 | 国产人妻精品一区二区三区不卡 | 亚洲精品无码成人A片在线古代 | 父皇轻点插好疼H限 | 国产综合一区二区三区 | 亚洲自偷自拍另类图片 | 欧美videos娇小 | 亚洲A片国产AV一区无码 | www.亚洲天堂网 | 夜夜躁狠狠躁日日躁2021 | 亚洲激情一区 | 国产麻豆精选AV | 亚洲 综合 校园 欧美 制服 | 高清在线一区二区 | 国产欧美一区二区日本加勒比 | 亚洲jizzjizz中国妇女 | 中文字幕亚洲第一 | 东北老女人大叫爽死啦 | 涩涩视频下载 | 亚洲国产高清在线观看视频 | 九九涩 | 99re热视频在线 | 97人人添人人澡人人澡人人澡 | 日韩欧美一及在线播放 | 免费毛片视频网站 | 97精品视频 | 久久精品1| 日韩美女自卫慰黄网站 | 欧美乱妇日本无乱码特黄大片 | 免费 高清 日本社区 | 日本A级做爰午夜免费视频 日本A片成人片免费视频生活片 | 日韩精品专区 | 国产素人自拍 | 日韩欧美一区二区三区免费看 | 好爽插到我子宫了高清在线 | 国产视频网站在线观看 | 国产二级一片内射视频插放 | 亚洲日本中文字幕 | 免费a级一片 | 日韩精品内射视频免费观看 | 色综合小说网 | 欧美日韩精品一区二区在线播放 | 高清一级毛片一本到免费观看 | 中文字幕一区二区三区精华液 | 一级毛片成人免费看a | 亚洲精品不卡久久久久久 | XL上司带翻译带中文 | 亚洲瑟瑟 | 曰本一道本久久88不卡 | 日韩欧美三级视频 | 成av人电影在线观看 | 国精品人妻无码一区二区三区一 | 国产日韩精品视频 | 亚洲 欧美 视频 手机在线 | 欧美一级va在线视频免费播放 | 欧美内射深喉中文字幕 | 激情五月婷婷 | 亚洲在成人网在线看 | 亚洲欧洲日本无在线码天堂 | 人妻天天爽夜夜爽三区麻豆A片 | 久久中文字幕网 | 中国免费黄色片 | 99久久精品免费 | 中文字幕 亚洲一区 | 91精品国产欧美一区二区 | 蜜桃视频在线观看免费网址入口 | 国产午夜精品美女视频在线 | 被一根又一根H强迫NP快穿 | 寂寞午夜 | 和少妇邻居做爰5 | 精品无码国产欧美在线 | 扬名立万在线观看 | 极品少妇伦理一区二区 | 国内视频一区二区 | 中文字幕日本久久2019 | 福利所导航导航导航导航 | 国产一区二区不卡老阿姨 | 日本一道一区二区免费看 | 宝贝我想尿在里面h | 草草影院在线观看视频 | 国产综合久久久久 | 色妇视频| 丰满人妻无码AV一区二区免费 | 开心五月 激情五月 深爱五月 | 愉拍自拍一区首页 | 亚洲色四在线视频观看 | 最近中文字幕大全在线电影视频 | 精品免费A片一区二区久久 精品美女国产互换人妻 | 久久人妻熟女一区二区 | 国产日韩精品一区二区三区在线 | 最近中文字幕完整视频高清1 | 国产片AV片永久免费观看 | 黄色网址免费观看 | 亚洲色图26p| 舐美女足vk| 5566在线资源| 精品AV国产一区二区三区四区 | 日韩精品视频网 | 国产丰满老熟妇乱XXX | 国产91网站在线观看 | 免费精品国产人妻国语色戒 | 无码观看AAAAAAAA片 | 一级毛片不卡片免费观看 | 国产福利在线观看免费第一福利 | 永久免费看www色视频 | 校花被扒衣吸乳羞羞漫画 | 国产亚洲精品中文带字幕21页 | 亚洲精品久久久久中文字幕二区 | xxxx国产| 国产精品 同事 在线 视频 | 欧美激情视频在线观看一区二区三区 | 亚洲乱码一卡二卡四卡乱码新区 | 国产69久久精品成人看 | 国产毛片欧美毛片久久久 | 深夜福利网站在线 | 中国老妇另类xxxx | 古装无遮挡一级毛片 | 亚洲欧美中文字幕高清在线 | 国产毛A片啊久久久久久A | 天天操天天舔天天干 | 亚洲AV成人一区二区三区在线看 | 四虎影视影院手机在线看 | 精品亚洲成A人7777在线观看 | 狠狠色狠狠色综合日日91app | 欧美精彩狠狠色丁香婷婷 | 成人夜间视频 | 欧美日韩中文国产一区 | 中文字幕在线有码高清视频 | 欧美三级在线电影免费 | 综合啪啪 | 成人做爰A片三免费视频 | 国产精品毛片在线大全 | linode日本iphone强汉视频 | 亚洲综合激情另类小说区 | 亚洲九色 | 欧美综合色区 | 色综合久久88色综合天天提莫 | 人人人人人看碰人人免费 | 欧美激情一区二区三级高清视频 | 日本视频一区二区免费播放 | 久久精品视频在线看4 | 久干网 | 国产精品美女久久久久AV超清 | 欧美激情91| 人妻仑乱少妇A片 | 最近高清中文在线字幕在线观看1 | 大陆老熟女嗷嗷叫AV在线 | 不卡中文字幕在线观看 | 国产一级特黄高清免费下载 | 妞干网手机免费视频 | 成人做爰片免费网站 | 国产人妖在线视频 | 高清不卡伦理电影在线观看 | 波多野结衣一区在线 | 午夜A级理论片左线播放 | 国产悠悠视频在线播放 | 成年网站在线 | 日韩精品中文字幕视频一区 | 国产99九九久久无码熟妇 | 亚洲AV久久无码精品热九九 | 国产视频亚洲精品视频 | 99热国产这里只有精品6 | 婷婷中文 | 精品亚洲卡一卡2卡三卡乱码 | 天堂资源在线中文 | 欧美另类网 | 成人理伦| 最近最好的中文字幕免费 | 国产午夜精品久久久久九九 | 国产护士在病房AV做爰小说 | 无码欧美黑人又大又 | 国产综合有码无码中文字幕 | 蜜月a 免费一区二区三区 | 久久AV亚洲精品一区无码 | 国产午夜精品美女视频在线 | 亚洲欧美精品无码大片在线观看 | 精品成人资源在线观看 | 韩国伦理电影播放伦理电影网站 | 成年在线人免费视频视频 | 韩剧国语版你是我的命运 | 精品久久久一二三区 | freev de0x x性欧美f| 最新国产在线播放 | 浪潮AV在线观看高清 | 日韩内射美女人妻一区二区三区 | 日韩精品一区二区三区在线观看l | 国产午夜视频在线观看网站 | 国产精品二区页在线播放 | AV一区AV久久AV无码 | 中文字幕一区二区三区精华液 | 无人视频在线观看免费播放下载 | 伦理高清百度影音 | 人善交video欧美 | 99久久精品费精品国产一区二 | 亚洲2024无矿砖码砖区 | 久久久久久99 | 亚洲网址在线 | 久久久久久国产精品三级 | 51精品视频免费国产专区 | 啊轻点灬大巴太粗太长视频 | 精品人伦一区二区三区潘金莲 | 国产人澡人澡澡澡人碰视频 | 宅男噜噜66 | 久久夜色噜噜噜亚洲AV0000 | 三级网站免费观看 | 韩国伦理片国语伦理片 | 精品久久久久国产 | 在线日产精品一区 | 鲁丝一区二区三区不属 | 国产成人免费福利网站 | 日本精高清区一 | 色乱| 99久久国产综合精品女不卡 | 午夜电影在线观免费 | 偷偷鲁在线影院 | 禁欲总裁被C呻吟双腿大张 禁止的爱6浴室吃奶中文字幕 | 一本久久综合亚洲鲁鲁五月天 | 国产免费福利 | 久久久久伊人 | 精品日本久久久久久久久久 | 久久国产精品二区99 | 欧美伊久线香蕉线新在线 | 欧美日本一道道一区二区三 | 欧区一欧区二欧区三免费 | 日韩一级视频在线观看播放 | 一区二区三区不卡在线 | 欧美人又长又大又粗无码视频一区 | 亚州黄色网址 | 国产无码av | 美女69xxxxx的视频 | 又硬又粗进去好爽A片免费视频 | 把女人弄特爽黄a大片 | 蝌蚪窝在线观看高清 | 四虎最新地址通知www | 国产JIZZ中国JIZZ免费看 | 亚洲婷婷国产精品电影人久久 | 美女扒开腿让男生桶爽免费APP | 草草在线观看视频 | 色五月视频 | 欧美高清一区二区 | 日本一区二区三区免费看 | 特级A欧美做爰AAAAA片 | 91综合久久久久婷婷 | 日韩色情综合网 | 久久久久国产精品免费看 | 欧美精品一区二区A片免费 欧美久久久无码精品亚洲日韩小说 | 国产女人与黑人在线播放 | 性吧有你cc | 欧洲免费看片尺码大 | 在线看片一区 | 天堂在线资源最新版 | 日本三级香港三级国产三级 | 男女激烈精交GIF动态图 | 欧美性生交大片免费看A片免费 | 舌头伸进去添的我好爽高潮视频 | 欧美 日韩 国产 另类 图片区 | 他的舌头弄得我爽水好多 | 四虎影视在线看免费完整版 | 美女毛片儿 | 最近中文字幕免费大全 | 又www又黄又爽啪啪网站 | 天天综合亚洲综合网站 | 亚洲色欲成人无码网站在线观看 | 久久在线 | 欧美日韩欧美日韩 | 91短视频版在线观看www免费 | 日韩欧美中 | 美国毛片网 | 午夜视频网站在线观看 | 爽欲亲伦小说 | 亚洲A片V一区二区三区有声 | 国产99久久久国产精品免费看 | 真人做人试看120分钟 | 色情A片成人网站免费看 | 亚洲一卡久久4卡5卡6卡7卡 | 一本免费视频 | 久久66热在线视频精品 | 苍井空视频线免费观看 | 美女祼体添鸡把图片 | 亚洲免费一级视频 | 亚洲一级黄色片 | 国产成人mv免费视频 | A片人人澡C片人人人妻付费 | 成年女人免费观看视频 | 国产免费一级视频 | 久久精品这里只有精品 | 黄视频网站在线看 | 隔着内裤进去了H | 精品人妻伦九区久久AAA片 | 中文精品一区二区三区四区 | 爱岛国电影网 | 色多多成人性视频APP下载 | 欧美精品亚洲精品日韩 | 欧美三级视频在线 | 国禁国产you女视频网站 | 岛国在线无码免费观 | 在线看免费观看AV深夜影院 | 在线资源天堂www | 亚洲国产欧美另类 | 日韩 视频在线播放 | 亚洲视频国产在线精品 | 漂亮的丰年轻的继坶3在线 漂亮的丰年轻的继坶3在线观看 | 国产人妻人伦精品836700 | 全部免费的毛片视频观看 | 大陆一级毛片免费视频观看 | 91热久久免费频精品99欧美 | 色情婷婷 | 日韩中文字幕在线观看视频 | 91精品全国免费观看老司机 | 2017av伦理片 | 99在线免费播放 | 日本久久久久久久做爰片日本 | 久久99精品久久久久久园产越南 | 日本午夜福利无码高清 | 蜜臀国产 | 大香线蕉视频在线观看 | 777精品出轨人妻国产 | 宅男噜噜噜66网站 | 亚洲图片日本视频免费 | 家庭教师波多野结衣在线观看 | 又紧又大又爽精品一区二区 | 免费国产精品视频在线 | 春色校园小说综合网 | 午夜三级在线 | 久久精品99视频 | 久久99热只有精品2019app | 色中色社区 | 97SE亚洲国产综合自在线不卡 | 国产福利在线观看片 | 欧美三级在线电影免费 | 99re 视频| 国产一区二区三区四区精华 | 老头老太tubebbbbxxxxhd | 久久精品久久久久久久久人 | 中国少妇BBWBBW牲交 | 国产亚洲精品久久久久久禁果TV | 中文幕无线码中文字蜜桃 | jizzzz中国| 亚洲AV优女天堂波多野结衣 | 一级黄色免费网站 | 国产亚洲午夜精品a一区二区 | 婷婷五月久久精品国产亚洲 | 国产精品2022不卡在线观看 | 伊人一区二区三区 | 古代级a毛片免费观看 | 国产成人mv 在线播放 | 青青草a国产免费观看 | 無码一区中文字幕少妇熟女网站 | 看一级黄色毛片 | 亚州笫一色惰网站 | 刘涛一级毛片 | 99久久精品国产片 | 很黄很色吸奶头A片动态图 狠狠撸的网站首页 | 国内精品乱码卡一卡2卡三卡新区 | 91精品国产品国语在线不卡 | 国产麻豆剧看黄在线观看 | 国产精选免费视频 | 久久国产免费观看 | 久久久无码精品亚洲A片0000 | 国产一区亚洲 | 欧美一级欧美一级高清 | 人妻精品久久无码区新狼窝 | 99视频免费在线观看 | 日韩欧美一区二区三区不卡 | 亚洲一区不卡视频 | 精品人妻无码一区二区三区GIF | 亚洲欧美精品在线 | 国产毛片精品一区二区色欲 | 亚洲 欧美 中文 在线 视频 | 国产色婷婷亚洲 | 樱花草视频在线观看免费资源WWW | 在线看播放免费网站 | 日本欧美一区 | 欧美一区二区三区精品影视 | 日本真人啪啪试看30秒 | 一级a级毛片 | 动漫精品视频一区二区三区 | 亚洲一级免费毛片 | 久久福利一区 | 四虎成人免费观看在线网址 | 成人免费的性色视频网站 | 亚洲视频影院 | 午夜在线观看cao | 亚洲高清成人 | 99re在线免费视频 | 中文在线资源链接天堂 | 国产福利资源 | 99re免费在线视频 | 天堂а√中文最新版地址 | 久久无码人妻中文国产 | 国产亚洲精品久久久一区 | 国产偷拍一极视频 | 久久96国产精品久久久 | 男人把女人桶到爽免费看视频 | 成人国产精品免费网站 | 真人一进一出抽搐无遮挡 | 久久久国产精品免费A片分环卫 | 在线五月婷婷 | 国产精品99久久久久久人 | 欧美日韩中文国产一区发布 | 国产AV一区二区三区人妻 | 欧美乱大交AV片久久 | 欧美激情A片久久久久久 | 亚洲日本无码精品无码白石麻衣 | 网站三级 | 丁香五月香婷婷五月 | 国产在线观看www鲁啊鲁免费 | 亚洲区中文字幕在线不卡电影 | 欧美日韩免费一区二区三区 | 97成人碰碰在线人妻少妇 | 亚洲AV怡红院影院怡春院 | 一本一道日韩一二三四区免费 | 亚洲巨乳巨臀在线一区二区BBW | 中文字幕日本一区波多野不卡 | 成年人黄色免费网站 | 色妞AV永久一区二区国产AV开 | 好紧好爽的午夜寂寞视频 | 国偷自产视频一区二区99 | 国产成人高清视频免费播放 | 中文一卡二卡三卡四卡免费 | 九一视频在线免费观看 | 精品免费A片一区二区久久 精品美女国产互换人妻 | 歐美性插图| 国产亚洲精品成人AV久久 | 2018国产大陆天天弄 | 纯肉无码AV在线看免费看 | 韩国精品一区二区 | 天堂8在线天堂资源在线 | 国产 日韩 欧美 综合 激情 | 色婷婷AV99XX | 亚洲精品久久久久久久蜜桃 | 久久久久久久久久久久福利 | 免费福利资源站在线视频 | 黄色特级毛片 | 东日韩二三区 | 日韩亚洲欧美一区二区三区 | 色重色 | 久久久免费的精品 | 我要看免费的毛片 | 婷婷色五月另类综合视频 | 四房播播首页 | 亚洲精品久久久久中文第一幕 | 日韩性插 | 国产美女人人人妻 | 亚洲三级毛片 | 狼人综合色 | 欧美亚洲色倩在线观看 | 桃子视频在线高清免费观看 | 国产精品人妻无码免费A片导航 | 亚洲v日韩v欧美在线观看 | 色欲AV色欲AV久久麻豆 | 97视频资源站 | 亚洲 欧美 字幕 一区 在线 | 国农村精品国产自线拍 | 色国产在线视频一区 | 亚洲a区视频 | 久久99国产精一区二区三区 | 久久免费影院 | 日韩高清不卡在线 | 最好看最新中文视频在线观看 | 18以下勿进色禁网站永久视频 | 在线日韩欧美一区二区三区 | 国产乱码精品一区二区三区四川 | 日本高清另类videohd | 桃花久久 | 天天躁人人躁人人躁狂躁 | 韩国日本免费不卡在线丷 | 亚洲第一伊人 | 亚洲.日韩.欧美另类 | 成人午夜免费视频毛片 | 九九五月天 | 亚洲精品综合 | 国产对白精品刺激一区二区 | 久久综合久久综合久久 | 国产在线拍揄自揄拍免费下载 | 大地资源网中文在线观看 | 狠狠l撸| 国产精美视频 | 久久国产精品一区免费下载 | 黄色操视频 | 亚洲伊人成色综合网 | 福利一区三区 | 韩国青草视频 | 日本老熟五十路息孑安野由美 | 四虎在线视频 | WWW.国产| 少妇真人直播免费视频 | 欧美大色 | 伦理电影中文字幕韩国在线观看 | 波多野结衣中文字幕在线观看 | 人禽互交50篇视频 | 中文字幕动漫精品专区 | 天天操天天干天天舔 | 泷泽萝拉qvod快播 | www.蜜臀 | 在线观看网站国产 | 免费的成人电影 | 91国在线产 | 99爱视频在线 | 日本xxxxx视频免费看 | 国内熟女精品熟女A片小说 国内揄拍国产精品人妻在线A片 | 一女N男巨物撞入NP纯肉 | 天天操天天干天天拍 | 欧美一区二区在线观看免费网站 | 亚洲 日韩 另类 天天更新 | 久久99精国产一区二区三区四区 | 一本色道久久爱88AV俺也去 | 国产精品久久久久久人妻香蕉 | 天堂网ww | 2022年亚洲午夜一区二区福利 | 欧亚成人A片一区二区 | 午夜刺激爽爽视频免费观看 | 91欧美视频| 亚洲免费综合色视频 | 欧美综合自拍亚洲综合图 | 亚洲午夜无码毛片AV久久京东热 | 嫩草影院地址一二三 | 国产日本一区二区三区 | 再深点舒服灬太大了添A片 在办公室里揉护士的胸 | 日韩精品一区二区三区国语自制 | 午夜一级做a爰片久久毛片 午夜亚洲视频 | 精品人妻人人爽久久爽AV | 成人精品AV一区二区三区网站 | 国产熟女一区视频在线播放 | 无套内谢少妇毛片A片小说色噜噜 | 狠狠狠色丁香婷婷综合久久五月 | 出轨的女人完整版 | 忘忧草在线社区WWW日本-韩国 | 日韩精品中文字幕在线观看 | 天堂网在线观看视频 | 综合色就爱涩涩涩综合婷婷 | 卡一卡二卡三专区免费 | 娇妻在客厅被朋友玩得呻吟漫画 | 免费v片在线观看网站 | 日韩不卡高清视频 | 毛片导航 | 毛片导航 | 韩国日本不卡高清免费视频 | 丁香五月综合缴情综合 | 国产精品免费露脸视频 | 少妇偷拍精品高潮少妇 | 成人3p | 日本真人边吃奶边做爽免费视频 | GV无套内射日本帅哥 | 日韩欧美视频一区二区 | 欧美一级精品高清在线观看 | 漂亮少妇高潮A片XXXX | 国产老师开裆丝袜喷水漫画 | 欧美极品在线观看 | 老湿免费 | 日本亚洲精品 | 日本香港三级亚洲三级 | 又硬又粗进去爽A片免费无码 | 国产最新免费高清在线视频 | 黄黄网 | 色悠悠网站 | 久久中文骚妇内射 | 精品视频在线一区 | 国内揄拍国产精品人妻在线A片 | 国产亚洲精品久久久999蜜臀 | 激情欧美日韩一区二区 | 一本大道一卡二卡三网站 | 97香蕉视频| 97伊人网| 翁公与小莹在客厅激情 | 日韩三级在线 | 日本最新免费二区三区 | 偷拍自偷 亚洲 欧美20P | 亚洲一区二区三区麻豆 | 四虎最新地址通知www | 好大好硬好爽18禁视频免费 | 影音先锋电影资源av | 国产成人综合亚洲 | 日韩精品在线观看免费 | 99国产精品综合AV无码 | 撸撸在线| 国产伦精品一区二区免费 | 成人18免费入口 | AV亚洲精品少妇毛片无码 | 国产又色又爽又黄又免费软件 | 波多一区 | 96国产下药迷倒白嫩美女 | 91精品乱码一区二区三区 | 美女搭车色诱司机 | 国产无套内射久久久国产 | 国产麻豆视频免费观看 | 午夜视频免费在线观看 | 国产成+人欧美+综合在线观看 | 亚洲高清国产拍精品动图 | 97精品国产高清在线看入口 | 国产又色又爽又黄的免费站 | 大奶肥臀| 亚洲午夜A片一区二区 | 熟女人妻久久精品AV天堂 | 日韩欧美国产偷亚洲清高 | 欧美亚洲啪啪 | 性一交一乱一乱A片AP88 | 国产剧情在线精品视频不卡 | 欧美日本一道道一区二区三 | 久热精品在线视频 | 黄视频免费网站 | 国产高清视频免费最新在线 | 五月天亚洲婷婷 | 神马影院夜伦鲁鲁片 | 免费无码一区二区三区A片蜜臀 | 欧美激情在线播放一区二区三区 | 成人伊人网| 日本一二三区视频在线 | 99久久亚洲综合精品网站 | 欧美丰满少妇久久无码精品 | 天使影院| 亚洲精品久久久久久久观小说 | 妺妺窝人体色20242024野大粗 | 女的毛片毛片毛毛片毛毛毛毛片 | 国产精品长腿丝袜第一页 | 自拍亚洲在线播放视频 | 又大又硬又爽18禁免费看 | 欧美色图一区二区三区 | 欧美三级在线电影免费 | 久久久不卡 | 天天综合天天看夜夜添狠狠玩 | 中文在线资源链接天堂 | 久久久精品久久 | 国产成人高清视频免费播放 | 亚洲综合无码一区二区 | 亚洲免费观看在线美女视频 | 在线免费观看最新电影 | WWW国产内插视频 | 亚洲色四在线视频观看 | 亚洲精华国产精华精华液网站 | 最好看的最新的中文字幕1 最好看的最新的中文字幕3 | 伦韩国理片在线观看 | 女人被躁到高潮免费视频 | 不良女警免费看 | 免费被黄动漫网站在线无网观看 | 米奇777色狠狠8888影视 | 久久久久久一品道精品免费看 | 国产乱对白精彩在线播放 | 日日天干夜夜狠狠爱 | 有一婷婷色 | 色综合综合色 | 不卡久久| 亚洲精品图片区小说区 | 国产成人精品福利网站人 | 女医生一级毛片 | 耽肉高H喷汁呻吟受攻 | 男人午夜视频在线观看 | 亚洲国产欧美在线观看 | 自拍电影 | 香蕉网站狼人久久五月亭亭 | 中文字幕视频在线观看 | 欧美真人性做爰一二区欧美影院 | 美国日本一区二区三区 | 亚洲经典一曲二曲三曲 | aaa一区二区三区 | 国产日产亚洲欧美综合另类 | 在线播放国产麻豆 | 国产精品人妻在线观看 | 四虎永久在线精品免费观看 | 好湿好紧快点再深一点动图 | 成人黄网18免费观看的网站 | 青草视频免费观看在线观看 | 国产又粗又猛又爽的视频A片 | 亚洲欧美一区二区成人片 | 在线观看午夜亚洲一区 | 波多野结衣久久国产精品 | 亚洲性无码A片在线观看尖叫 | 亚洲人成电影网站在线观看 | 日韩午夜 | 无码欧美激情性做爰免费 | 日韩欧美一级 | 91精品国产色综合久久 | 久久综合干 | 久久久爱毛片一区二区三区 | 黄v网站 | 欧美特黄99久久毛片免费 | 国产精品综合 | 97无码人妻精品1国产精东影业 | 国产无限免费观看黄网站 | 天天色天天射综合网 | 国产免费福利在线视频 | 波多野结衣久久高清免费 | 日韩无码在钱中文字幕在钱视频 | H狠狠躁死你H视频A片 | 国精品人妻无码一区二区三区一 | 国产综合有码无码中文字幕 | 三妻四妾高清完整版在线观看免费 | 中文字幕亚洲精品久久AV | 秋霞伦理手机在钱 | 一区二区三区美女视频 | 国产麻豆剧看黄在线观看 | 免免费国产AAAAA片 | 亚洲天堂网在线观看视频 | 国产精品青青在线麻豆 | 国产人A片在线乱码视频 | A片粗大的内捧猛烈进出在线 | 久久久精品久久久久三级 | 色猫直播 | 91精品网| 日本院线影片 | 亚洲AV国产精品无码A片 | 欧美日韩激情一区二区三区 | 第章丰腴美妇岳服侍巨龙 | 免费在线黄色网址 | 成人网zhan | 欧美69xxxx| 精品久久久久久无码人妻国产馆 | 韩三平的父亲 | 色婷婷国产熟妇人妻露脸AV | 亚洲人成人网毛片在线播放 | 日本无码MV免费视频在线 | 亚洲经典一曲二曲三曲 | 日韩精品免费看 | 再猛点深使劲爽免费视频 | 精品日韩在线 | 国产又色又爽又高潮免费视频麻豆 | 亚洲精品国产v片在线观看 亚洲精品高清国产一线久久97 | 拔擦拔擦8X永久华人免费播放器 | 国产一级黄| 免播放器无码av网址 | 国产在线观看香蕉视频 | 卡一卡二免费看 | 午夜色网站 | 巨人精品福利官方导航 | 欧美 亚洲 日韩 在线综合 | 先锋影音av资源网 | 久激情内射婷内射蜜桃人妖 | 老妇乱子伦视频国产 | 香港三级日本三级a视频 | 99精品视频免费 | 亚洲在线中文字幕2 | 国产精品久久影院 | 伦韩国理论片琪琪在线观看 | 办公室漂亮人妇在线观看 | 欧美午夜精品一区区电影 | 网红思瑞一区二区三区 | 男人天堂网夜色99视频 | 伊人亚洲影院 | 进进出出好涨啊粗大动态图 | 国产三级精品在线 | 精品性影院一区二区三区内射 | 久久婷婷五月综合色 | 一体一道久久88色合综合网 | 人人影视在线 | 丁香花在线观看免费观看图片 | 波多野结衣中文在线播放 | 日韩精选 | 2024美女视频黄频大全视频 | 苍井空a 集在线观看网站 | 波多野结衣在线视频免费观看 | 亚洲日韩在线视频 | 亚洲欧美日韩一区二区 | 久久一级 | 国产精品亚洲精品久久久久 | 超级乱婬长篇小说 | 国产乱码精品一区二区三区四川 | 婷婷色视频 | 久久国产三级精品 | 国产午夜伦理 | 黄页在线免费观看 | 泷川雅美的不雅视频 | 国产三级一区二区 | 99视频精品国产免费观看 | 天天综合天天做天天综合 | 国产精品A成V人在线播放 | 亚洲视频一 | 黄色网页观看 | 久久精品国产曰本波多野结衣 | 最新欧美一级视频 | 五月综合激情网 | 亚洲综合日韩精品欧美综合区 | 9亚洲精华国产精华精华液 av大片 | 欧美精品亚洲精品日韩专区 | 麻豆传播媒体2023最新网站 | 精品一区二区三区在线成人 | 西西艺术大胆大尺度艺 | 久草免费福利资源站在线观看 | 一本色道久久综合狠狠躁 | 国产黄色免费观看 | 久久久精品国产免费观看同学 | 亚洲综合AV在线在线播放 | 天堂一区二区在线观看 | 你好湿呀!小妖精快叫 | 污污内射久久一区二区欧美日韩 | 2021久久伊人精品中文字幕有 | WWW.久久.COM|